Two separate jobs: take the active colony down, then stop the next one. Baiting suits an active nest, since workers carry it back and the colony goes with it, but it runs over weeks and needs return visits to keep stations charged. A trenched chemical barrier around the footings is the stronger option on a house that is currently clear.
Sandy peninsula soils drain fast, which affects how a barrier behaves and how it gets refreshed, so the method gets chosen after the inspection rather than off a price list. Decking, paths and pavers all move the cost, because a barrier has to carry on underneath them. Barrier work gets rechecked yearly. Quoted in writing, with the method set out.